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Friday, 27 November 2015 21:46

Christmas lights

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Christmas is coming... and LED Christmas lights are appearing. Almost without exception, these LEDs flash at 60 Hz (in the US, 50 Hz in Europe). The result: move the camera and you'll see the dashed-line trace of each LED. Here's an example...

 LED lights on trees at Christmas

Read 3697 times Last modified on Friday, 27 November 2015 21:51

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